Fire valve is an important accessory for industrial and construction pipeline control. Fire valve is composed of body, opening and closing organization and valve cover. The manufacturer must hold the production license of fire valve and special valve manufacture license. Commonly used fire valves are gate valves, globe valves, saving valves, exterior valves, plunger valves, ball valves, butterfly valves, check valves, remote floating ball valves, solenoid valves, pressure reducing valves, filters, wet alarm valves, etc.
Gate valve is a gate with opening and closing parts. The movement direction of gate is straight with the direction of fluid. The gate valve can only be fully opened and closed. The gate moves in a straight line with the stem. The parameters of unsuitable gate vary from 5 degrees to 2 degrees 52'. Improve its technicality and compensate for the errors occurring in the processing of the view point of sealing surface. This gate is called elasticity. Gate.
The opening and closing part of the fire gate valve is the gate. The movement direction of the gate is straight with the direction of the fluid. The gate valve can only be fully opened and closed, and can not be adjusted and saved. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used type of gate valve are wedge-shaped, and the wedge angle varies with the valve parameters. Generally, the wedge angle is 50. When the medium temperature is not high, the gate of the wedge gate valve can be made into a whole, called a rigid gate.
It can also be made into a gate which can produce slight deformation to improve its technicality and compensate for the errors of the view point of the sealing surface in the process of processing. This kind of gate is called elastic gate. The types of fire gate valves can be divided into wedge gate valves and parallel gate valves according to the sealing surface equipment. Wedge gate valves can also be divided into single gate, double gate and elastic gate; parallel gate valves can be divided into single gate and double gate.